Nonhygroscopic plastic building block



Oct. 28, 1930. J. B. LINN NONHYGROSCOPIC PLASTIC BUILDING BLOCK Original Filed March 26, 1928 2 Sheets-Sheet l ATTOR NEY Oct. 28, 1930. J. B. LINN 1,780,086

NONHYGROSCOPIC PLASTICBUILDING BLOCK Original Filed. March 26; 1928 2 Sheets-Sheet '2 ATTORNEY Patented Oct. 28,1930

NITED STATES.

JOHN'B; LINNor C NTER sacrum, PENNSYLVANIA NONHYGROSCOPIC PLASTIC BUILDING-Bros]:

" Application filed March 26,1928, Serial No. 264,612. Renewed man 20,1930.

7 o surfaces of the ends of the blocks in the body of the wallhaving a coating of water proofing material or composition, such as tar or.

thelike, to further insure against moisture seeping through, due to capillary attraction.

Stillanother purpose; is to provide a building block with water proofingmaterial on the inner surfaces of the inner wall ofthe blocks which make up the corner of abuilding, to further" insure against moisture seeping through due tocapillary attraction. I

Aistill further purpose is to provide a sec tional plastic building blockof whiclrthe sections have improved interlockingjsme'ans for uniting the sections, cement or other plastie adhesive being'used to hold 'the sections rigid.

It is to be understood that the particulars herein given are in no way limiti've, and that while stillkeeping withinthe scope of the invention; any desired modification of details and proportions may be made in the constructionof the appliance according to circmnstances. I w '7 The invention; comprises further features and 'combinationof parts to be hereinafter set forth, shown in the drawings andclaimed; In the drawings: q I; l Figure 1 is a view in perspective of the improved building block construction in accordance with theinvention, showing one ing the difierent sections of the bloclrdisashalf of the surface of thesectionf12 provided 4 5 sembled, 1 J V Figure 3-is a longitudinal sectional view on line 33 of Figure 1.

Figure kis a'sectional View on line 4 4:

ofFigure 3 lookingitoward one end.

12 to the end wall 5 of the section 3. The

Figure 5is a cross sectional view on line 5-5 of Figure 3 looking'towar d the 'opposite end. t

Figure 6is a plan view of several. of the blocks showing the corner of a'building, illustrating where one wall interlaps with a wall as at right angles, showing how the first wall abuts the tarred or similarly coated portion of one face of each block.

Figure 7-is a detailed view of one sec tionof a building block which is used in the ca body of the wall.

. Referring to the drawings, 1 identifies a corner building block as a whole and 2 is a building block which is used to make up the body of a wall. The building block in Fig-- 62 ure 1 comprises a corner section 3, which comprises a sidewall 4 and an integral end wall 5.- These walls 4 and .5 of the corner building blockhavetheir inner faces counter-sunk or depressed as shown at "6 and 7 7a with beveled or inclined faces 8,9,10 and 11. The depressed faces 6 and 7" with their beveledparts asjust identified haveacoating or layer of water proofing material suchas tar or the like, thereby preventing moisture from seeping through. a The end wall 5 of the see tion3 of the corner block'when itsiface 14: abuts a wall" 15 at right angles thereto, the

end face 14 has a coating of water proofing material such as tar or the like to insure preventing seeping through of the moisture. W hen this condition exists theinner face of I the. depression 7 is not necessarily provided with a coating of water proofing material. l

The endwall 5 of the-section3 of a corner block has in:.oneof its'edges a dove tail recess 16 for thereception ofa dove tail ex tension 17 of the section 12 of the corner building block, thereby locking the section end section 13 of the building block inLFigures'l and 2 is of. ashape somewhat similar to a key stone, and is provided with dove tail extensions 18 and 19, which enter correspondingly shaped recesses or pockets 20 and 21, in the corresponding opposite ends of the sections and 12, so that when the dovetail "extension17 enters the dove tailed're'cess 16 and the extensions :18 and '19 are engaged with the dove tail recesses 20 and: 21,.the sevoral sections of the corner building block are united, and when these joints are made, suitable plastic material such as cement or the like is used to render the joints firm and secure. When the section 13 is positioned as just set forth its entire surface 22 may be provided with a coating of water proofing material such as tar, so that when said face is fixed to an adjacent building block moisture is prevented from seeping through to the interior part of the wall, which may be composed of building blocks of this character.

While the inner face of the. section 13 is 1 straight up and down or rather not deable plastic material, such as cement, concrete or the like.

Where the end faces of the blocks of a wall are joined, cement or other plastic material is used to insure joints between the blocks of the wall.

A substantial portion of one face of the section 12, where it is engaged by an end face of a building block contained in a right angle wall, is provided with a coating of water proofing material preferably tar as identified at 24. I

The building blocks 2, making up the body of a wall, that is not at the, corner, each consist of four sections instead of 3. In other words a building block as at 2 in Figure 6 comprises two side sections, inner and outer, 25 and 26, and two end sections 27 and 28, in which case the end sections 27 and 28 are constructed similar to thesection 13 in Figure 2. and are joined to the side sections by joints similar to the dove tail connections 18, 19, 20 and 21.-

Where twowalls are joined at right angles to make a corner of a building, or an obtuse or an acute corner, the building blocks forming such corner or intcrengaging or interlaced, or connected, in an intervening manner, such as will cause acrigid connection between such walls and thereby insure a rigid structure.

The top and bottom edges of the various sectionsof the corner building block as well as those making up the body of a wall have a coating of water proofing material such as is identified at 29 and 30 to prevent moisture from seeping through.

By thisconstruction of building block it is possible to make up aconcrete wall of a nonhygroscopic character, preventing moisture from ever seeping through to the interior surface of the wall of the building.

Neither of the remote exposed faces of the building block are supplied with weather proofing material, the inner face of the wall being left plain for stippling stucco or being finished off for papering or otherwise, while the outer face of the wall may be left plain or decorated or figuredin any manner whatever.

Theinvention having been set forth, what is claimed is:

1. A non-hygroscopic building unit comprising inner and outer sections and two end sections, the inner face of each of the inner and outer sections being dished or chambered out from one end to theother, one of the ends of each of the inner and outer sections having a dovetail recess, its upper and lower walls-being under-cut, therebeing a spacing or separating wall between the end of the dished or chambered out portion and said dovetail recess, one of the end sections having on certain of its opposed edges extenslons, each being correspondingly dovetailed and adapted to cooperatively engage within a dovetail recess of either of the inner and outer sections, the dividing or separating wall acting as an abutment for the dovetail extension, and acting to prevent moisture from 'enterin the dished or hollowed out part of one o the sections.

2. In a building unit the combination with inner and outer unit sections, ofend unit sections, the outer unit section merging into one of the end sections, the inner surface of each of the inner and outer sections being hollowed or dished out, the dished or hollowed out face having beveled side and end walls, one end of each of the inner and outer sections on its inner portion having a recess with its end wall under-cut causing the recess to have a dovetail configuration, a spacing or separating wall between the dovetail recess and the end of the dished inner surface, opposed edges of one of the end sections having lateral extensions with their opposed end under-cut, whereby the extensions may, engage into dovetailed cooperation withsaid recesses, the spacing or separating walls acting as abutments to limit the intersection in its movement longitudinall between the inner and outer sections, sai building unit inner, outer and end sections being provided with a coating of water proof material, acting to prevent transmission of moisture from the outer section to the inner section, and thereby providing'a non-hygroscopic building unit.

In testimony whereof he afiixes his si nature.

' I :JOHN B. LINN. 

